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has_table_privilege spawns scions has_database_privilege, has_function_privilege,

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has_language_privilege, has_schema_privilege to let SQL queries test
all the new privilege types in 7.3.  Also, add functions pg_table_is_visible,
pg_type_is_visible, pg_function_is_visible, pg_operator_is_visible,
pg_opclass_is_visible to test whether objects contained in schemas are
visible in the current search path.  Do some minor cleanup to centralize
accesses to pg_database, as well.
This commit is contained in:
Tom Lane
2002-08-09 16:45:16 +00:00
parent 65dc2e0d8c
commit 4ab8e69094
12 changed files with 1325 additions and 282 deletions
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28
src/backend/utils/misc/superuser.c
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@ -10,19 +10,17 @@
*
*
* IDENTIFICATION
* $Header: /cvsroot/pgsql/src/backend/utils/misc/superuser.c,v 1.23 2002/06/20 20:29:40 momjian Exp $
* $Header: /cvsroot/pgsql/src/backend/utils/misc/superuser.c,v 1.24 2002/08/09 16:45:14 tgl Exp $
*
*-------------------------------------------------------------------------
*/
#include "postgres.h"
#include "access/heapam.h"
#include "catalog/catname.h"
#include "catalog/pg_database.h"
#include "catalog/pg_shadow.h"
#include "commands/dbcommands.h"
#include "utils/syscache.h"
#include "miscadmin.h"
#include "utils/fmgroids.h"
/*
@ -69,25 +67,9 @@ superuser_arg(Oid userid)
bool
is_dbadmin(Oid dbid)
{
Relation pg_database;
ScanKeyData entry[1];
HeapScanDesc scan;
HeapTuple dbtuple;
int32 dba;
Oid dba;
/* There's no syscache for pg_database, so must look the hard way */
pg_database = heap_openr(DatabaseRelationName, AccessShareLock);
ScanKeyEntryInitialize(&entry[0], 0x0,
ObjectIdAttributeNumber, F_OIDEQ,
ObjectIdGetDatum(dbid));
scan = heap_beginscan(pg_database, SnapshotNow, 1, entry);
dbtuple = heap_getnext(scan, ForwardScanDirection);
if (!HeapTupleIsValid(dbtuple))
elog(ERROR, "database %u does not exist", dbid);
dba = ((Form_pg_database) GETSTRUCT(dbtuple))->datdba;
heap_endscan(scan);
heap_close(pg_database, AccessShareLock);
dba = get_database_owner(dbid);
/* XXX some confusion about whether userids are OID or int4 ... */
return (GetUserId() == (Oid) dba);
return (GetUserId() == dba);
}